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The Normandy monitoring network urges vigilance on emerging winter cereals as aphids may still fly in drier weather with cool nights. Three of 17 monitored wheat and barley plots show aphids, with 2 to 20% of plants infested.
The concern is barley yellow dwarf virus spread at these early growth stages.
Aphid-borne virus outbreaks could reduce yields in some French regional plots, but the scale reported is local and small. The price impact is negligible.
agriculteur-normand.comArvalisNov 2, 2026After 14 past disease events, WHEAT moved a median -0.3% over 5 sessions (29% higher; middle half -0.7% to +0.5%), and -0.8% over 20.
Not enough comparable past events yet for a historical read.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.
